CN1584070A - Pouring furnace base and constructing method for heating furnace - Google Patents
Pouring furnace base and constructing method for heating furnace Download PDFInfo
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- CN1584070A CN1584070A CN 200410024209 CN200410024209A CN1584070A CN 1584070 A CN1584070 A CN 1584070A CN 200410024209 CN200410024209 CN 200410024209 CN 200410024209 A CN200410024209 A CN 200410024209A CN 1584070 A CN1584070 A CN 1584070A
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- brick
- high alumina
- slideway
- furnace
- alumina brick
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Abstract
A heating furnace pouring furnace base and constructing method are disclosed. The heating furnace pouring furnace base consists of furnace base insulating layer1, clay bricking layer2, high-alumina brick3 and slideway brick4. The slag-resistant pouring material layer5 is arranged on the clay bricking layer2, high-alumina brick3 and slideway brick4 are embedded in slag-resistant pouring material layer5 by 'T' shape. The slag-resistant pouring layer 5 is poured by second times, The first time for pouring slag-resistant pouring material layer is after clay bricking layer2 being built. After high-alumina brick3 and slideway brick4 have been embedded by 'T' shape, then the slag-resistant pouring material layer is poured for second time. It achieves high compressing strength and long using life.
Description
Technical field
The invention belongs at the bottom of a kind of heating-furnace and the improvement of constructional method, at the bottom of particularly a kind of process furnace pouring furnace and constructional method, be applicable to the construction of iron and steel metallurgy enterprise heater for rolling steel soaking bed furnace bottom and repair fast.
Background technology
At present, at the used heater for rolling steel soaking bed furnace bottom of iron and steel metallurgy enterprise, constitute by furnace bottom thermal insulation layer, undercloak, high aluminium brick layer and slideway brick mostly, high aluminium brick layer in a row keeps flat setting, and the slideway brick clamp is between adjacent row's high alumina brick, and the slideway brick is that horizontal standing up put, high aluminium brick layer is exposed in its slideway brick upper edge, the furnace bottom thermal insulation layer is a light-weight insulating brick, needs construction in layer during construction, needs blowing out during maintenance.The furnace bottom of this structure, main drawback is: the engineering time is long, the life-span is short, is meeting under the situation of overhaul especially, and furnace outage time is long, can reduce production efficiency widely.Simultaneously, the upkeep cost and the cost of overhaul are taken all higher.In addition, because the high aluminium brick layer end is layered on slideway brick bottom, so support strength and compressive strength are relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of structure more rationally, the slideway brick is inlayed more firmly and support strength and compressive strength is strong, long service life, construction or overhaul time are short process furnace pouring furnace at the bottom of.
Another object of the present invention provides the constructional method at the bottom of this process furnace pouring furnace, and this method reduces material consumption, reduces the cost of overhaul, accelerating construction progress, if overhaul can be shortened furnace outage time, enhance productivity.
For reaching above purpose, the technical solution adopted in the present invention is: at the bottom of this process furnace pouring furnace, comprise that furnace bottom thermal insulation layer, undercloak, high alumina brick and slideway brick constitute, the furnace bottom thermal insulation layer is in bottom surface, undercloak is on the furnace bottom thermal insulation layer, it is characterized in that establishing on undercloak the anti-slag cast of one deck bed of material, high alumina brick becomes with the slideway brick
Type is embedded in the anti-slag cast bed of material.Horizontal upright the setting in a row of described slideway brick, anti-slag cast bed of material 20-30mm is exposed in the upper edge, and its high alumina brick lies against the seam bottom of adjacent slideway brick, and the slideway brick is played a supportive role, the length direction of high alumina brick is vertical with the length direction of slideway brick, to strengthen support strength and compressive strength.
This heating-furnace bottom application worker may further comprise the steps:
(1), at first builds furnace bottom thermal insulation layer and undercloak;
If overhaul, can be after the blowing out of process furnace scheduled overhaul, at first remove the slideway brick and the high alumina brick on soaking bed top layer clean, (the tapping spout brick can be dismantled in case of necessity) cleared up the top layer foreign material, undercloak and furnace bottom thermal insulation layer for the soaking bed bottom, can be according to the actual service condition and the scaling loss degree of furnace bottom, determine to pull down still and do not pull down, general light-weight insulating brick layer and the undercloak that only keeps furnace bottom gets final product, not discarded for slideway brick of removing and high alumina brick, but second stage employ can be saved time and material like this, reduces recondition expense.
(2), pour into a mould the anti-slag cast bed of material for the first time:
For the first time be the duration of pouring after building up furnace bottom thermal insulation layer and undercloak, or after the overhaul furnace bottom cleaned out.Stir earlier, the back cast, in whipping process, Bian Jiashui, limit add anti-slag mould material, evenly be as the criterion with material balance, closely knit, material look unanimity, cast thickness be high alumina brick thickness 1-3 doubly.
(3), inlay high alumina brick:
For making high alumina brick play good supporting to the slideway brick, do not waste high alumina brick again, therefore, the embedded location of high alumina brick should calculate in advance, after cast finishes for the first time, before anti-slag mould material is not solidified fully, rapidly passive high alumina brick is embedded in the anti-slag cast bed of material by the position that pre-determines, the surface requirements of high alumina brick is totally smooth, and the high alumina brick in overhaul under the available dismounting is as supporting layer.
Embed high alumina brick and press following parameter:
A, high alumina brick embed row's number
Determine row's number of high alumina brick according to row's number of furnace superintendent direction sliding ways brick.
The direction that b, high alumina brick embed
The direction that high alumina brick embeds, determine according to the thickness of slideway brick self and length, generally be defined as high alumina brick for keeping flat, and length direction is vertical with the orientation of slideway brick, can improve support degree like this, insert depth generally makes the high alumina brick upper surface and the pouring layer upper surface is equal for the first time.
The spacing that c, high alumina brick embed
Guarantee that the edge that adjacent slideway brick connects all gets final product at the middle part that it supports high alumina brick.
(4), place mat slideway brick:
After the high alumina brick embedding finishes, the slideway brick is pressed horizontal upright state place mat on high alumina brick, and fixation, if overhaul, this slideway brick can utilize old slideway brick, the height of its wearing part available first time of the anti-slag cast bed of material is mended flat.
(5), pour into a mould the anti-slag cast bed of material for the second time:
After the slideway brick has been laid, anti-slag mould material is carried out pouring into a mould the second time in the gap between the slideway brick, the thickness of second pouring is comprehensively decided according to the thickness of high alumina brick and the degree of wear of slideway brick, generally pours into a mould the low 20-30m of aspect ratio slideway brick upper surface and gets final product.
(6), maintenance:
After above-mentioned steps finishes, cleared up surface irregularities, maintenance 2-3 hour, after anti-slag mould material is solidified fully, can put into production.
Beneficial effect of the present invention is: rational in infrastructure, construction is fast, long service life, support strength and compressive strength are strong, be convenient to maintenance.
Description of drawings
Fig. 1 is a structure schematic top plan view of the present invention.
Fig. 2 is that the present invention is along the A-A cross-sectional schematic.
Fig. 3 is that the present invention is along the B-B cross-sectional schematic.
Embodiment
Make the present invention with reference to accompanying drawing 1,2,3.At the bottom of this process furnace pouring furnace, comprise that furnace bottom thermal insulation layer 1, undercloak 2, high alumina brick 3 and slideway brick 4 constitute, furnace bottom thermal insulation layer 1 is in bottom surface, and undercloak 2 is on furnace bottom thermal insulation layer 1, on undercloak 2, establish the anti-slag cast of one deck bed of material 5, high alumina brick 3 and 4 one-tenth of slideway bricks
Shape is embedded in the anti-slag cast bed of material 5.Described slideway brick 4 horizontal upright setting in a row, the upper edge is than the anti-slag cast bed of material 5 high 20-30mm, and its high alumina brick 3 lies against the seam bottom of adjacent slideway brick 4, slideway brick 4 is played a supportive role, high alumina brick 3 keeps flat, and its length direction is vertical with the length direction of slideway brick 4, to strengthen support degree.
Embodiment 1
Steel Mill of Taishan Iron ﹠ Steel Co., Ltd., Shandong Prov., high-efficiency heat-accumulating blast furnace (BF) gas heating stove, in July, 2003, " bulge " phenomenon took place in the process furnace partial side wall, pushed away steel and was affected, the shutdown maintenance of having to.Tight in the duration, under the situation that task weighs, adopt this method to repair to the soaking zone furnace bottom, only patching is one, duration is only used 1 day, and routine is repaiied furnaceman and planted and shortened 10 days, saves nearly 300,000 yuan of materials cost, nearly 4,000,000 yuan of direct economic benefit, after blow-on was produced, the oxidization burning loss rate had reduced one percentage point, and furnace bottom iron scale packing phenomenon obviously reduces, cleaning cycle was brought up to half a year by 15 days, and working strength of workers is significantly improved.
Claims (3)
1, at the bottom of a kind of process furnace pouring furnace, comprise that furnace bottom thermal insulation layer (1), undercloak (2), high alumina brick (3) and slideway brick (4) constitute, it is characterized in that establishing the anti-slag cast of one deck bed of material (5) on undercloak (2), high alumina brick (3) becomes with slideway brick (4)
Shape is embedded in the anti-slag cast bed of material (5).
2, at the bottom of the process furnace pouring furnace according to claim 1, it is characterized in that horizontal upright the setting in a row of described slideway brick (4), the upper edge is than the high 20-30mm of the anti-slag cast bed of material (5), its high alumina brick (3) lies against the seam bottom of adjacent slideway brick (4), and the length direction of high alumina brick (3) is vertical with the length direction of slideway brick (4).
3, the constructional method at the bottom of a kind of process furnace pouring furnace is characterized in that it may further comprise the steps:
(1), at first builds furnace bottom thermal insulation layer and undercloak;
If overhaul, can be after the blowing out of process furnace scheduled overhaul, at first remove the slideway brick and the high alumina brick on soaking bed top layer clean, (the tapping spout brick can be dismantled in case of necessity) cleared up the top layer foreign material, undercloak and furnace bottom thermal insulation layer for the soaking bed bottom, can be according to the actual service condition and the scaling loss degree of furnace bottom, determine to pull down still and do not pull down, general light-weight insulating brick layer and the undercloak that only keeps furnace bottom gets final product, not discarded for slideway brick of removing and high alumina brick, but second stage employ.
(2), pour into a mould the anti-slag cast bed of material for the first time:
For the first time be the duration of pouring after building up furnace bottom thermal insulation layer and undercloak, or after the overhaul furnace bottom cleaned out.Stir earlier, the back cast, in whipping process, Bian Jiashui, limit add anti-slag mould material, evenly be as the criterion with material balance, closely knit, material look unanimity, cast thickness be high alumina brick thickness 1-3 doubly.
(3), inlay high alumina brick:
The embedded location of high alumina brick should calculate in advance, after cast finishes for the first time, before anti-slag mould material is not solidified fully, rapidly passive high alumina brick is embedded in the anti-slag cast bed of material by the position that pre-determines, the surface requirements of high alumina brick is totally smooth, and the high alumina brick in overhaul under the available dismounting is as supporting layer.
Embed high alumina brick and press following parameter:
A, high alumina brick embed row's number
Determine row's number of high alumina brick according to row's number of furnace superintendent direction sliding ways brick.
The direction that b, high alumina brick embed
The direction that high alumina brick embeds, determine according to the thickness of slideway brick self and length, generally be defined as high alumina brick for keeping flat, and length direction is vertical with the orientation of slideway brick, can improve support degree like this, insert depth generally makes the high alumina brick upper surface and the pouring layer upper surface is equal for the first time.
The spacing that c, high alumina brick embed
Guarantee that the edge that adjacent slideway brick connects all gets final product at the middle part that it supports high alumina brick.
(4), place mat slideway brick:
After the high alumina brick embedding finishes, the slideway brick is pressed horizontal upright state place mat on high alumina brick, and fixation, if overhaul, this slideway brick can utilize old slideway brick, the height of its wearing part available first time of the anti-slag cast bed of material is mended flat.
(5), pour into a mould the anti-slag cast bed of material for the second time:
After the slideway brick has been laid, anti-slag mould material is carried out pouring into a mould the second time in the gap between the slideway brick, the thickness of second pouring is comprehensively decided according to the thickness of high alumina brick and the degree of wear of slideway brick, generally pours into a mould the low 20-30m of aspect ratio slideway brick upper surface and gets final product.
(6), maintenance:
After above-mentioned steps finishes, cleared up surface irregularities, maintenance 2-3 hour, after anti-slag mould material is solidified fully, can put into production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410024209 CN1286993C (en) | 2004-05-26 | 2004-05-26 | Pouring furnace base and constructing method for heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410024209 CN1286993C (en) | 2004-05-26 | 2004-05-26 | Pouring furnace base and constructing method for heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584070A true CN1584070A (en) | 2005-02-23 |
| CN1286993C CN1286993C (en) | 2006-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410024209 Expired - Fee Related CN1286993C (en) | 2004-05-26 | 2004-05-26 | Pouring furnace base and constructing method for heating furnace |
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| Country | Link |
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| CN (1) | CN1286993C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787411A (en) * | 2010-03-23 | 2010-07-28 | 中冶宝钢技术服务有限公司 | Under-converter track replacement method |
| CN103759537A (en) * | 2014-01-17 | 2014-04-30 | 福建兴航机械铸造有限公司 | Construction method for low-cement refractory castables at bottom of stepping heating furnace |
-
2004
- 2004-05-26 CN CN 200410024209 patent/CN1286993C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787411A (en) * | 2010-03-23 | 2010-07-28 | 中冶宝钢技术服务有限公司 | Under-converter track replacement method |
| CN103759537A (en) * | 2014-01-17 | 2014-04-30 | 福建兴航机械铸造有限公司 | Construction method for low-cement refractory castables at bottom of stepping heating furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1286993C (en) | 2006-11-29 |
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Granted publication date: 20061129 Termination date: 20120526 |